John william price



(N0 Model.)

J. w. PRICE. AUTOMATIC EXTINGUISHER FOR LAMPS.

Patented'Deo. 29, 1891.

NITIED STATES PATENT OFFICE.

JOHN WILLIAM PRICE, OF LONDON, ENGLAND AUTOMATIC EXTINGUISHER FOR LAMPS.

SPECIFICATION forming part of Letters Patent No. 465,946, dated December29, 1891.

Application filed February 3, 1891. Serial No. 380,095. (No model.)

To all whom it may concern:

Be it known that I, JOHN WILLIAM PRICE, a subject of the Queen of GreatBritain, residing at Ohiswick, in the county of Middlesex, England,haveinvented a new and useful Improved Automatic Extinguisher for Lamps,

. of which the following is a specification.

My invention relates more especially to mineral-oil lamps; and it hasfor its object a novel device by which,if the lamp is inclinedsufficientlyfrom its proper vertical position, the flame isautomatically extinguished. For this purpose I arrange and fix round theopening above the wick, through which the flame of the lamp passes, aspherical surface of sufficient extent, having a central openingcoinciding with the opening for the flame. Upon this spherical surface Ifit a hemispherical cap, which can move freely in any direction upon thefixed spherical surface described. The lower edge of the cap may have awire or heading round it, and the center of its spherical surface has anopening through it also corresponding with the opening for the flame.

The accompanying drawings are in illustration of my invention. I

Figure Us a side view of a lamp having my invention applied to it; andFig. 2 is a similar view, partly in section. Fig.3 separately shows thespherical surface upon which the hemispherical cap fits, and'Fig. 4shows the cap separately. Figs. 5, 6,and '7 show the cap in differentpositions.

The same letters of reference indicate the same parts in the differentfigures.

a is the body of the lamp, and b is the fixed spherical surface throughwhich the flame passes and upon which the loose hemispherical cap 0fits.

d is the central opening in the cap, and e are guidesor guards whichallow it to move freely, but prevent it from falling off altogether.

When the lamp is in its proper position, as shown in Figs. 1 and 2, thecap 0 is arranged as shown in Fig. 5, with its central opening atcoinciding with the opening for the flame through 1),- but if the lampfalls or is tilted to one side in any direction the cap 0 falls over, asshown in Figs. 6 and 7, covering the opening in b and instantlyextinguishing the flame. I form on the upper edge of the hole through I)a very slightly-raised flange, arranged so as to project a verylittleinto the hole in the cap a. By this means the lamp may be carried aboutsafely without risk of the cap 0 falling over and extinguishing it; butif it should be sufficiently inclined or should fall overin anydirection the cap 0 at once falls and extinguishes the flame.

The improved device is very simple, cheap, and, efficient for thepurpose required and may be applied to any kind of lamp.

What I claim, and desire to secure by Letters Patent, is

1. The loose hemispherical cap 0, having an opening d through it, incombination with the JOHN IVILLIAM PRICE.

Witnesses:

ARTHUR E. EDWARDS, HAROLD KENNEDY.

